uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/admin/gtk-vnc/default.nix

@@ -0,0 +1,72 @@
+{ lib
+, stdenv
+, fetchurl
+, meson
+, ninja
+, gobject-introspection
+, gnutls
+, cairo
+, glib
+, pkg-config
+, cyrus_sasl
+, libpulseaudio
+, libgcrypt
+, gtk3
+, vala
+, gettext
+, perl
+, python3
+, gnome
+, gdk-pixbuf
+, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gtk-vnc";
+  version = "1.3.0";
+
+  outputs = [ "out" "bin" "man" "dev" ];
+
+  src = fetchurl {
+    url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
+    sha256 = "X6qlgjuMvowLC6HkVsTnDEsa5mhcn+gaQoLZjPAKIR0=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    gobject-introspection
+    vala
+    gettext
+    perl # for pod2man
+    python3
+  ];
+
+  buildInputs = [
+    gnutls
+    cairo
+    gdk-pixbuf
+    zlib
+    glib
+    libgcrypt
+    cyrus_sasl
+    libpulseaudio
+    gtk3
+  ];
+
+  passthru = {
+    updateScript = gnome.updateScript {
+      packageName = pname;
+      versionPolicy = "none";
+    };
+  };
+
+  meta = with lib; {
+    description = "GTK VNC widget";
+    homepage = "https://wiki.gnome.org/Projects/gtk-vnc";
+    license = licenses.lgpl2Plus;
+    maintainers = with maintainers; [ raskin offline ];
+    platforms = platforms.linux;
+  };
+}